/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache POI" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache POI", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * Ptg.java
 *
 * Created on October 28, 2001, 6:30 PM
 */
package org.apache.poi.hssf.record.formula;

import org.apache.poi.util.LittleEndian;
import org.apache.poi.hssf.util.SheetReferences;

/**
 * @author Glen Stampoultzis (glens at apache.org)
 */
public class MemFuncPtg extends ControlPtg
{

    public final static byte sid = 0x29;
    private short field_1_len_ref_subexpression = 0;

    public MemFuncPtg()
    {
        //Required for clone methods
    }

    /**Creates new function pointer from a byte array
     * usually called while reading an excel file.
     */
    public MemFuncPtg( byte[] data, int offset )
    {
        offset++;
        field_1_len_ref_subexpression = LittleEndian.getShort( data, offset + 0 );
    }

    public int getSize()
    {
        return 3;
    }

    public void writeBytes( byte[] array, int offset )
    {
        array[offset + 0] =  sid ;
        LittleEndian.putShort( array, offset + 1, (short)field_1_len_ref_subexpression );
    }

    public String toFormulaString( SheetReferences refs )
    {
        return "";
    }

    public byte getDefaultOperandClass()
    {
        return 0;
    }

    public int getNumberOfOperands()
    {
        return field_1_len_ref_subexpression;
    }

    public Object clone()
    {
        MemFuncPtg ptg = new MemFuncPtg();
        ptg.field_1_len_ref_subexpression = this.field_1_len_ref_subexpression;
        return ptg;
    }

    public int getLenRefSubexpression()
    {
        return field_1_len_ref_subexpression;
    }

    public void setLenRefSubexpression(int len)
    {
        field_1_len_ref_subexpression = (short)len;
    }

}